SerLooK is a KDE application for inspecting data
going over serial lines. It can work as a binary
terminal that sends and receives data through a
defined port (Point to Point mode) and displays
them on separate views. Each view can be
configured to display data in hexadecimal,
decimal, octal, binary, and raw ASCII. It is
also possible to perform I/O through terminal
emulation views and define a secondary port and
monitor the traffic between two external hosts
using a "Y" cable (Snooper mode).

KMidimon monitors events coming from a MIDI external port or application via the ALSA sequencer, or Standard MIDI Files. It is especially useful if you want to debug MIDI software or your MIDI setup. It features a nice graphical user interface, customizable event filters and sequencer parameters, support for all MIDI messages and some ALSA messages, MIDI playback, and saving the recorded event list to a text file or SMF.

Minirok is a small music player for the K Desktop
Environment. As its name hints, it's modelled
after Amarok, but with a reduced set of features.
In particular, it is designed to cover all the
needs and wishes of the author, leaving everything
else out. The look and feel is almost identical to
Amarok's, though. The main interface is a tree
view of the filesystem, with a playlist that can
only be populated via drag and drop. There is no
collection built from tags, so it's targeted at
people whose collections are already structured in
a tree at the filesystem level. Searches can be
performed both in the tree view and the playlist.

Krcstat is a graphic replacement for the Gentoo rc-status and rc-update command line utilities. It can be used to check that all your services are active and generate an alert if they are not. You may easily create new runlevels and drag services from the Services pane into them. (Alternate runlevels may be specified by using the softlevel parameter on the kernel command line in Grub or Lilo.) Krcstat is a bit conservative and will not let you delete the boot or default runlevels or certain boot services deemed critical. To use its configuration features it must run as root; if you only want to monitor services, it can be run as a normal user.

katimon is an unofficial ATI graphics card temperature monitor, fan regulator, and overclocking utility. It is a graphical front-end to the command-line aticonfig utility. Katimon monitors and controls supported ATI graphics cards. It can monitor temperature, fan speed, GPU speed and memory speed. It can automatically control fan speed by monitoring the temperature. It can also act as an overclocking utility for cards that support it. This utility only works with the proprietary fglrx driver.

synaptiks is a KDE touchpad tool consisting of a system settings module for touchpad configuration and a tray application for touchpad management. The system settings module allows you to configure basic as well as advanced touchpad settings. The tray application can switch your touchpad on or off, either manually using a global shortcut, or automatically, if external mice are plugged or while the keyboard is active.